Abstract : This final report documents the phase I contamination survey of site 1-10, a storage tank farm constructed in 1942. 30 samples from 13 borings were analyzed for volatile and semivolatile organics and metal with separate analyses for AS, HG, and DBCP. C6H6, DCPD, CH2CL2, Cu, Zn, and HG were detected at or above their respective indicator ranges. However, the concentrations of Cu and ZN appear to be consistent with the natural levels of these metals. A phase II program consisting of 22 additional borings and soil gas sampling is recommended to 1) determine the extent of contamination and 2) discover whether potential contaminants have leaked from the tanks. The volume of whether potentially contaminated soil present is estimated at 74,000 cubic yards. Appendices: chemical names, phase I chemical data, comments and responses. -BKA